The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2019
Filed:
Sep. 13, 2013
Applicant:
Nifco Inc., Yokosuka-shi, Kanagawa, JP;
Inventors:
Youhei Souma, Yokosuka, JP;
Hiroyuki Nakaya, Yokosuka, JP;
Yoshio Tomono, Yokosuka, JP;
Tadahiro Kitamura, Yokosuka, JP;
Yoshiyuki Goto, Yokosuka, JP;
Assignee:
NIFCO INC., Yokosuka-Shi, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 43/00 (2006.01); B29C 45/26 (2006.01); B29C 45/44 (2006.01); B29L 31/24 (2006.01); B29L 23/00 (2006.01); F16L 41/02 (2006.01); F16L 41/03 (2006.01);
U.S. Cl.
CPC ...
F16L 43/008 (2013.01); B29C 45/2614 (2013.01); B29C 45/4421 (2013.01); B29L 2023/004 (2013.01); B29L 2031/24 (2013.01); F16L 41/021 (2013.01); F16L 41/023 (2013.01); F16L 41/03 (2013.01);
Abstract
A curved tube structure, including: a tube main body including a bent portion at one portion in an axis line direction; and an enlarged cross-section portion formed along the axis line direction of the tube main body in an inner periphery inside a bending direction of the bent portion for enlarging a cross-section area of the tube main body.